Propane caveatPatchor.js snippet for a /clear command

gistfile1.js

/*
  Add a /clear command to clear out the chat transcript in Propane.
  Place this snippet into:
  ~Library/Application Support/Propane/unsupported/caveatPatchor.js
*/

Campfire.Speaker.Filters.push(
  function(message) {
    var match;
    if (match = message.match(/^\/clear\s*$/)) {
      chat.transcript.trimHistoryBy(100)
      return false;
    } else {
      return message;
    }
  }
  );
chat.speaker.filters  = Campfire.Speaker.Filters.toArray();